obama cowl make a gaffe. mitt would win the debates, go could send a flood to destroy all mankind. ( laughter ) so there's hope. >> schieffer: short of building an ark, what is romney's best chance. we'll ask new jersey governor chris christie, and one-time adversary, newt gingrich. so far romney is sticking to a familiar theme, but does he need to do more? >> i will lower the tax rate. he wants to creat to raise them. i'll create jobs and he'll kill them. also marsha blackburn, bob shrum, and larry sabato from the university of virginia center for politics. as we head into first presidential debate, we'll talk about the state of america at home and abroad with the distinguished panel. michelle rhee, former head of the washington, d.c. school system and founder of students first. economist mark zandi of moody analytics. bob woodward, author of "the price of politics" and hendrick smith, author of the new book "who stole the american dream?." it's all ahead on "face the nation." captioning sponsored by cbs fro